TREA

Hidefumi Otsuka

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Printing machine
    • Patent number 5,021,810
    • Issue date Jun 4, 1991
    • Hitachi, Ltd.
    • Katsumi Muroi
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS